1、Support stereo encoder and decoder. Supports HFP, HSP, A2DP, AVRCP and SPP configuration files . 2、Noise reduction and aftersound cancellation. Multi‑band equalizer configuration. Support packet loss concealment. 3、Multipoint HFP and A2DP. Support AUX OUT, earphone. Automatic memory connected function, operation easier, more convenient. 4、Support voice prompts. Integrated lithium battery charger, support 300mA fast charging and over discharge protection. 5、Support all audio equipment via audio input interface, to make wireless audio receiving and transmission. 6、Support automatic searching for Bluetooth devices and connect, to make transmit wireless audio. 7、Built‑in lithium battery, long service life. Bluetooth transmitter V1, Bluetooth receiver V0, low power consumption. 1 x 2 In 1 Bluetooth Receiver Transmitter Adapter 1 x 3.5mm Hole to for RCA Audio Cable1 x 3.5mm Hole to Hole Audio Cable1 x Micro USB Power DC Cable1 x User Manual Condition: 100% Brand NewItem Type: 2 In 1 Bluetooth Receiver Transmitter Adapter Material: ABSColor: BlackSupport Protocol：For A2DP/AVRCP/HFP/SPP HIDReceiving Working Current：≤43MATransmitting Working Current：≤60MAStandby Current：<18MABattery Type: Polymer Lithium BatteryBattery Capacity：600MAHCharging Current：300MAPlaying Time: > 8HBluetooth Distance：> 10MCharging Mode: Micro USB 5V / 0.5AOutput Connection： 3.5MM Stereo Audio PortInput Connection： 3.5MM Stereo Audio PortCompatibility: Compatible for Android/IOS System Phones Tablet PC All Bluetooth Audio DevicesWeight: Approx. 105g